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991 



TERTIARY FAUNA OF FLORIDA 



ture is added more or less distinct radial striation or threading, as in S. mutica 

 var. scintillata, but finer and less distinct. The concentric sculpture is sharper 

 and more elevated than in var. appressa, but not lamellose, as in var. duplinensis, 

 and the radial sculpture is confined almost entirely to the interspaces. This 

 type was described from Wilmington, but occurs occasionally with the others 

 with which it intergrades. The reticulation is feebler than in 5". bellastriata 

 Conr., to which it bears some resemblance. 



Semele proflcua Pulteney. 



f Tellina reticulata Linne, Syst. Nat., ed. xii., p. 1119, 1767. 

 Tellina proficua Pulteney, Hutch. Dorset., p. 29, pi. v., fig. 4, 1799; Mont. Test. Brit., p. 66, 



1803. 



Tellina decussata Wood, Gen. Conch., p. 190, pi. 43, figs. 2, 3, 1815. 

 Amphidesma orbiculata Say, Journ. Acad. Nat. Sci. Phila., ii., p. 307, 1822; Tuomey and 



Holmes, Pleioc. Fos. S. Car., p. 94, pi. 23, fig. 4, 1856. 

 Amphidesma radiata Say, Journ. Acad. Nat. Sci. Phila., v., p. 230, 1826; Hanley, Rec. 



Shells, p. 342, pi. 12, fig. 8, 1856; not of Reeve, 1853. 



Amphidesma jayanum C. E. Adams, Proc. Boston Soc. Nat. Hist., ii., p. 10, 1845. 

 Amphidesma reticulata (Chemn.) Orbigny, Moll. Cuba, ii., p. 240, 1846; Reeve, Conch. 



Icon. Amphidesma, pi. v., fig. 29, 1853. 

 Amphidesma subtruncatum (Sby.) Reeve, Conch. Icon. Amphidesma, fig. ii, 1853; Sow- 



erby, Spec. Conch., pt. 2, Amphidesma, fig. 3, 1855. 



Amphidesma decussata Reeve, Conch. Icon. Amphidesma, pi. iv., fig. 23, 1853. 

 Semele orbiculata Holmes, Post-Pi. Fos. S. Car., p. 51, pi. viii., fig. 9, 1858. 

 f Semele radiata Holmes, Post-Pi. Fos. S. Car., pi. viii., fig. ii, 1858; young shell. 

 Semele carolinensis Conrad, Am. Journ. Conch., iii., p. 14, 1867. 

 Semele reticulata Arango, Moll. Cubana, p. 247, 1880. 



Pliocene of the Caloosahatchie River, Florida, and of the Waccamaw beds, 

 South Carolina; Pleistocene of Simmons Bluff, South Carolina; living on 

 the coast of the eastern United States south to the Antilles and Brazil. 



This is the species which was referred to the Linnsean Tellina reticulata by 

 Spengler, Schumacher, Wood, and other early writers. Linne, however, states 

 that his species was brought from India by Tesdorf, and refers to a figure of 

 an Amboyna species in Rumphius to illustrate it. In the absence of definite 

 types, which do not exist, we must therefore regard Linne's species as Oriental. 

 The next name in point of date is that of Pulteney and Montagu, who errone- 

 ously supposed the shell to be British. Say's names are later, being subse- 

 quent to that of Wood. Conrad named the figures of Tuomey and Holmes 

 which represent the pit of the resilium as unusually large. This is a somewhat 



